The steel pipes are mainly used in construction. The production capacity is 3 million tons from domestic producers who are members of the association. And households that do not have a company, but the other 20 were found. Manufacturers Almost all have cut production down to less than 40%, or produce less than 1.5 million tons per year, the demand for which is estimated at 2 million tonnes per year, representing a total market value of about four billion baht per. year
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